not tear or break off on to one another. Convergent boundaries are where plates crash or crunch together. Here crust is destroyed and recycled back into earth’s interior as one plate dives under another. These boundaries are also known as subduction zones. There are three types of convergent boundaries: oceanic-continental convergence‚ oceanic-oceanic convergence‚ and continental-continental convergence. Oceanic-continental convergence‚ is when an oceanic plate pushes in to and subducts
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Part 1 of 1 - 100.0/ 100.0 Points Question 1 of 22 4.0/ 4.0 Points Who proposed that all of the present continents were once joined together in a single supercontinent called Pangaea? A.Alfred Wegener B.Charles Darwin C.Arthur Holmes D. Harry Hess Answer Key: A Question 2 of 22 4.0/ 4.0 Points The scientific community rejected the theory of plate tectonics because Alfred Wegener could NOT A.identify a mechanism to move the continents. B.disprove competing theories
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“Evaluate how plate tectonics theory helps our understanding of the distribution of seismic and volcanic events” (40 marks) The theory of plate tectonics was first introduced by Alfred Wegener in 1912. He observed the continents an could see they interlock like a jig saw puzzle‚ for example the West African Coastline fits snugly into the South American coastline‚ he suggested that at one point in time there was only one giant continent called “Pangea”. Later evidence was found that proved this theory
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that traversed the length of the ridge. ⦁ Hess explains that as new crust is being formed at the ridges old ocean crust is being destroyed as it is pulled back into the Earth in deep ocean trenches which lie along the edges of continents called subduction zones ⦁ Ewig found that beyond the continental shelf the ocean floor contained only recent sediment and unlike what was expected for the 3 billion years of accumulation‚ instead of being 12 miles thick‚ the sediment at its thickest was only 1000ft
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the scientific community as the Sumatra–Andaman earthquake.[4][5] The resulting tsunami was given various names‚ including the 2004 Indian Ocean tsunami‚ South Asian tsunami‚ Indonesian tsunami‚ and the Boxing Day tsunami. The earthquake was caused by subduction and triggered a series of devastating tsunamis along the coasts of most landmasses bordering the Indian Ocean‚ killing over 230‚000 people in fourteen countries‚ and inundating coastal communities with waves up to 30 meters (98 ft) high.[6] It was
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Section 1-Verbal Ability 30 Questions-30 Minutes Antonym Directions: In each of the following antonym questions‚ a work printed in capital letters precedes five lettered words or phrases. From these five lettered words or phrases‚ pick the one most nearly opposite in meaning to the capitalized word. 1. PRODIGAL: (A) nomad (B) sycophant (C) gifted child (D) economical person (E) antagonist 2. ARTIFICE: (A) edifice (B) sincerity (C) prejudice (D) creativity (E) affirmation Sentence Completion
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regained favour‚ though modified‚ in plate tectonics theory. Convection currents The circular movement of a liquid or gas undergoing convection in a limited space. Convergent plate boundary Also known as a destructive plate boundary (because of subduction)‚ is an actively deforming region where two (or more) tectonic plates or fragments of the lithosphere move toward one another and collide. Crater The depression found at the
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is their geographical position within the world and in relation to tectonic plate boundaries. For example you have highly destructive and explosive volcanoes often found along destructive plate boundaries because of increased pressure within the subduction zone. An example of this is the Philippines‚ which is situated above a destructive plate boundary and this leads to numerous and highly destructive volcanic eruptions. You also find volcanoes along constructive plate boundaries where the plates
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feldspar increase. Some common accessory minerals are apatite‚ titanite and various iron oxides. Xenoliths from the partially melted margins of the magma chamber are common. Origin: Diorite usually forms along with granite in continental crust above subduction
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Unit 5 |1. |Rising air expands and cools; sinking air is compressed and warms. Typically‚ the size of the temperature change is: | | |A. | | |5oF/1000 ft change in elevation going up‚ and 3oF/1000 ft coming down | | |
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